Antitheft device for incandescent lamps.



.priced as is the case with the so-calledV of Connecticut,

JOSEPT SACHS, 0F HARTFORD, CONNECTICUT, ASSIGNOR, BY MESN E SSIGNMNTS,T@ THE HART & HEGEMAN MANUFACTURING COMPANY, OF HARTFORD, CONEIEGTT-CUT, .A CORPORATION 0F CONNECTICUT.

anrirnnrr mivicn son incnnnnscnm LAMPS.

' Specication of Letters Patent.

.Application filed August 26, 1912. Serial No. 716,959.

To all whom it may concern.'

Be it known that l, JosEPH SACHS, Zen of the United States, ford, in the'county-of Hartford and State have invented certain new andusefullmprovements-in Antitheft Devices for Incandescent Lamps, of whichthe following is a specification.

This invention relates to anti-theft devices for incandescent lamps.

It is a well-recognized fact that lamps arel surreptitiously abstractedfrom their sockets, especially where they are higha cititungsten lamps..

It is the purpose of the present invention to provide means which iscapable of inexpensive manufacture and which is certain in action, bywhich the unauthorized removal of al lamp from its socket 4can beeffectually prevented.

My invention may forms, two of which described, but I do not showing asI may depart therefrom in sev'- eral particulars within the scope of-the1nvention defined by the claims.

Referring to the an elevation partly in section of an ordinary lamp andsocket provi ed with my anti-theft device. Fig. 2 is a detail view insection showing a portion'of the latching and sealing means. Fig. 3 is a'detail view in elevation of thev same. lamp and socket the invention beembodied in various are herein shown Vand being embodied as partsofbotli'.

a `.lamp such as 6 from its socket, such as 7, in connection wit'nmeansfor positively normally preventing releasing movement of said firstmentioned means, it being evident that the latter has a releasingmovement and' that when the same is insuch condition, the lamp can befreely taken `from its socket. Both said 'means may vary radically as tocharacter as will be clear from what Ihave already stated. A v

limit myself to suchI residingv at Hartdrawings: Figure 1 isl Fig. 4'shows a held normally not material.-

'have described one means,

The lamp shown in Fig.

ferential recess or groove 6' Where the shell .of the base joins theneck ofthe bulb and which constitutes a convenient seat fora catch suchas thering 8 which vfor ease of assemblage is divided or split. Saidring or collar 8 is normally or when in operative relation, immovable inthe direction of the longitudinal axis of the lamp, being in factpractically fixed. .It is ofcourse obvious that said ring, collar,'or'projecting catch portion might be integral with the lamp; in fact-Ishow and will hereinafter describe such afco'nstruction. Vv(.)n'e ofthe parts such as the socket 7 as will' hereinafter appear,

carries a latch, the other part, (the l'amp`in` equipped with, a-

the present case), bein catch engageable by sai latch, andthe uppersurface of such ring or collar 8, con-p' veniently.v presents such 'acatch, although this is, not essential. The dividedband 10 answerssatisfactorily -as 'such a latch although it could easily be ofsome'other nature.4 Said latch orband 10-is preferably Patented Aug. a,1915;,

1 has a circum- 4in fixed relation with the f socket 7, and thebead v11g--on'the external shell 12- of the socket can .be advantageously lutilized' in this connection although this is- This structure is vofativan-- tage, however, in thatsaid bead 11 yis'present on lstandardsockets. Hence'said bead 11,- presents a suitable catch coperativeI withthe latch, fitting for this purpose-'an interior groovelS-in the band 10which as-willfsa y be understood is somewhat-resilient. Said` band 10 ispreferably provided ,with a detent portion 4which o f the flange -8 theiupper face of the ring -or collar 8, land when this relation exists.the lamp 'cannotA be, withdrawn from its Consequently to remove thelamp socket,

.from its socket, it is necessary to .open said vband 10 sufficiently topermit the collar 8 detent or operabeing disengagedv from the tiveportion 14 as the lamp is unscrewed.

which when in operative relation, will prevent of the lamp from itssocket, and I prefer to associate therewith, means for positivelypreventing releasing movement of said lat'ching means and as alreadyintimated the saine may be of any suitable character.

1n the construction shown the latching 'as shown consists of the`internal flange orvlip 14 adapted't'o engagev withdrawal i `11n-slottedand a wrench, key 1'5 cumstances.

lwas removed and this sgmewhat beyond its band 10 has at its terminals,the outwardlyextending ears or lugs 15 and 16 perforated for the passageof the locking members as the pin 17 which as shown consists of a screw.One-'of the perforations such. as that in the lugf 16 has wall of theother perforation is threaded to receive the threads of the screw 17,which Y constitutes a simple 4means of locking the ,'llatching band 10.

While the head 19 of the screw 17 might .be of'a'y suitable shape, Iprefer that it be of a form suitable to receive or equivalent tool; asshown it is polygonal, being triangular'. Said head fits within a casingas 2O which may .as illustrated, consist of a short tube rigid orintegral with the lug or ear 16. This casing or tube 20 acts as one formof guard for lsaid, head 19 preventing the operation Athereof byordinary wrenches, lplers, etc.,

from the side,

a special tool as will be clear, being required to remove said lockingscrew. The latter with its adjuncts already de# scribed, under ordinarycircumstances, acts with certaint to prevent the wrongful releasing orfreeing action of the band 10 or its equivalent.

l There may be instances, however, where persons may carry'a key orwrench suitable for operating the locking pin or screw 17,

and to guard against this possibility, I pro- .yide an additionalsafeguard, in the fornrdirpf e.

sealing means, as will now appear. case 20 yhas'its walldiametrically-oppositely perforated as at 21 to receive' the wire 22 theends of which are brought together outside said case, and heldv againstaccidental separation, by the fusible seal 22. The wire 22 constituting,part of the sealing lneajns, extends across the case 20 and therebypresents a barrier against access to the s'wcrew head 19. To reach saidhead therefore'the wire must be either snipped between theseal andthecase or the seal 22 inelted, both of which are operations which a thiefwould not do underA ordinary ciri Even if4 he did the band 10 couldnotbe opened suiiciently to permit the lwithdrawal of the lamp, until thescrew 17 i as already sta-ted, would require ay special tool.

The following` is one of the several proce dures which may be' adoptedin assembling the parts: The ring or collar 8 ordinarily of insulatingmaterial, will be opened slightly and slipped over. lamp until it is'reccived within the angular groove 6 and when freed it automaticallycloses and hugs Ithe wall of said'groove. The latch or band 10 is thenslightlyopened to receive the shell 12 yand is then slipped along untilthe flange 14 abuts against the bead 11, the band at thistimebeing-opened i normal-for locked rss its wall plain while the' thetime that the base portion 'the d .no way secured one to the other thebase of the License lation and its upper edge being separated or spacedfrom the corresponding edge of the shell 12. The lamp can then be freelyinserted in its/socket and when the base or connecting portion thereofhas bottomed in said socket, the lamp will belatched in such position bydrawing the band upward until the bead 11 is opposite the' groove 13,the flange .14 being above the flange 8. The band is then tightenedabout the socket and lamp and then locked and sealed as alreadydescribed.

Referring now 25 of the socket has a prolongation 26 which is slitn at27, the slit or slits as. shown, eX- tending well down into the body ofsaid shell. It follows therefore that the extended portion 26 isresilient. Said. resilient portion has an inturned iiange 28 to snap.over .the collar 29 of the lamp 30, shown 1n this case as integraltherewith, at about thereof is bottomed in said socket, so that whensaid relation .is maintainedv said lamp cannot be taken from'its socket.Said extended or resilient portion 26 is also provided with lugs 31 and31 equivalents of the lugsv 15 and 16 already described, and which areprovided with the same accessories to which correspondingv characterswill be applied. After the lamp is introduced into its socket 25 and'after the circular iiange 28 has snapped over the collar 29, the lugsor ears are drawn together and the locking screw and sealing meansapplied as already set forth in connection with the lother form ofevice.

It will be noted that my improved lamp lock comprises two separate anddistinct main elements, viz: the lamp catch ring which is preferablysplit and the locking band (also preferably split) with portioncoperating with the catch ring and the catch portion on the socket.These elements are entirely separate from each other and complete inthemselves, being in held together only'when the .band is closed andlocked around the lamp and socket. By Y thus providing a lamp lock inwhich these two elements are entirely separate andunsecured. to oneanother, I am enabled to greatly facilitate the attachment of the lockand also thereby'make it possible to use `it ywith a greater variety oflamps and sockets.

Both., lamps andsockets vary. in diameter at the points at which thelock is to be attached. The Separate lamp catch ring may be made indifferent sizes while the lockingband maybe made infonly one size. 1nusing my' improved -1 lock, therefore, necessary to provide a Avariety fsizledl .complete locks such". beenne'1A "rv," but it' is cnrovide-.-arcngle common. locking ba and being to Fig. t, the outershell its catch itis not. r @.erently found in the facility usetherewith a catch ring o1 une requisite size to properly fit the neck ofthe lamp.

A further advantage of my construction is of attaching the lock which isdue entirely to this separate piece' construction. The lamp catch ringparticularly when made so as to be resilient and hug the necl; of thelamp, is first sprung ontoI the lamp into its proper position seatingi'n the recess at the upper end of the base and hugging the glass of thebulb. 'The band which is also resilient is then sprung over the catchring and the complete lamp with its attached catch ring and band iS thenscrewed into the socket, after Which the ends of the band are broughttogether and locked. l l

Vhat I claim is:

1. An incandescent comprising a split catch bandto inclose the. ring,lthe two parts being disconnected toypermit thev ring to be ap'- pliedto the lamp independently of the band, the ring when in positionsurrounding the neck of the lamp above the base thereof and the bandhaving a bearing for the ring.

2. An incandescent lamp anti-theft device lamp anti-theft device ringand a locking comprising a split ring and a split one-piece resilientband disconnected from each other,

` l independently of the to be applied to the' lamp band, the bandinclosing the ring and thering when in place encircling the neck of thelamp and fitting above the base thereof.

3. An incandescent lamp anti-theft device comprising a split catch ringand a split onepiece resilient band disconnected from each other topermit the ring to be applied to the lamp independently of the band, theband having an internal iange to support the ring and also having aninternal groove to receive thebeadsocket.

l. An incandescent lamp anti-theft device comprising a split catch ringof insulating material, and a split resilient locking band, the .two.being disconnected to permit the ring to be applied to the lampindependently of the band, the ring when in operative positionsurrounding the neck of the lamp above and against the base thereof, theband having a bearing to support the ring.v l

In testimony whereof I affix my signature in presence of two witnesses.

JOSEPH .sAcHs to permit the ring Witnesses:

HEATH SUTHERLAN-D, KELVIN N. SACHS.

of an incandescent lamp

